Our Accreditations & Certifications
We are committed to the highest standards of service and quality. Our industry accreditations reflect our ongoing dedication to excellence, safety, and compliance.
ISO 9001: Quality Management Certification
We’re proud to be ISO 9001 Certified – a globally recognised standard for quality management. This certification demonstrates our structured approach to service delivery and our continuous commitment to customer satisfaction
Consistency
Accountability
Improved Processes
Our Partnerships
Satisfied Clients
What Our Customers Say
Sisk have been using Grant & O’Brien Cleaning Services for a number of years to clean our welfare facilities. We have a very good relationship with Grant & O’Brien. Their employees are extremely diligent about their work. The employees respect the site rules when it comes to health and safety.
They do a very good job cleaning and understand the level required so much so that we have often received comments from our clients stating, “the building will never look so good or be so clean.”
The Hunt Museum has been using Grant & O’Brien Cleaning Services for the past 18 years.
We have found them to be extremely professional in all aspects of their work, providing cleaning services to an extremely high standard and their staff are friendly and cooperative. I would highly recommend their service.
We are very happy to have contracted Grant O’Brien to clean our Production Plant and Offices on a daily basis.
Their work ethic is top class and their cleaning standards are very high. Management are hands on which simplifies the process.
Our company has used Grant & O’Brien’s cleaning services since 2015. We have received an excellent service from them and are pleased with their professionalism, dependability, and the consistency of their work. We have found them to be an excellent cleaning service.
We switched to Grant & O Brien in July 2017 as I had previous experience of this company. I knew from previous experience that they are a very good company and they have excellent staff who take pride in what they do. They are very experienced and no job is a problem for them.
We have no hesitation in recommending Grant & O Brien for all your cleaning needs, especially in these times of Covid 19. We are very happy to have switched to Grant & O Brien Cleaning Services.
We changed our cleaning provider to Grant & O’Brien, as we needed to enhance our cleaning routines in the school due to Covid -19. We are absolutely thrilled with the service they are providing, a consistently very high standard of cleaning and a professional manner from all their employees.
We happily recommend Grant & O’Brien to any school that needs a reliable, efficient cleaning service.
Grant O’Brien has been exceptional to work with. Their ability to respond and adapt as our school has provided us with real peace of mind, particularly with the challenges associated with COVID-19. Jonathon Grant has provided us with the answers before we had the questions.
The safety, health and wellbeing of our school community is our top priority and the services offered by Grant O’Brien have been instrumental for us to ensure and sustain this. A pleasure to have Grant O’Brien has part of our wider team!
PMI has been using Grant & O’Brien Cleaning Services since 2013 and we have found their quality of work and their service to be excellent. We have found them to be very professional and offer an extremely high standard in all aspects of their work and would recommend them every time.
We would have no hesitation in recommending Grant & O’Brien for any future works.
We have been working together for over 15 years and find dealing with Betty and others is nothing short of a professional, efficient and easy experience. The delivery of all services is found to be competitively priced, efficient and quality second to none.
Grant & O’Brien are one the first name on our suppliers list when it comes to our exacting cleaning requirement and we would have no hesitation in recommending Grant & O’Brien for any cleaning services you may have